include/linux/mtd/nand_ecc.h

   1 /*
   2  *  drivers/mtd/nand_ecc.h
   3  *
   4  *  Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
   5  *                          David Woodhouse <dwmw2@infradead.org>
   6  *                          Thomas Gleixner <tglx@linutronix.de>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * This file is the header for the ECC algorithm.
  13  */
  14
  15 #ifndef __MTD_NAND_ECC_H__
  16 #define __MTD_NAND_ECC_H__
  17
  18 struct mtd_info;
  19
  20 /*
  21  * Calculate 3 byte ECC code for eccsize byte block
  22  */
  23 void __nand_calculate_ecc(const u_char *dat, unsigned int eccsize,
  24                                 u_char *ecc_code);
  25
  26 /*
  27  * Calculate 3 byte ECC code for 256/512 byte block
  28  */
  29 int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
  30
  31 /*
  32  * Detect and correct a 1 bit error for eccsize byte block
  33  */
  34 int __nand_correct_data(u_char *dat, u_char *read_ecc, u_char *calc_ecc,
  35                         unsigned int eccsize);
  36
  37 /*
  38  * Detect and correct a 1 bit error for 256/512 byte block
  39  */
  40 int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
  41
  42 #endif /* __MTD_NAND_ECC_H__ */